Neuro Lab

• Segment C1-C4 is involved in neck flexion.
• Segment C3 is involved in neck lateral flexion.
• Segment C4 is involved in shoulder elevation.
• Segment C5 is involved in shoulder abduction.
• Segment C6 is involved in elbow flexion and wrist extension.
• Segment C7 is involved in elbow extension and wrist flexion.
• Segment C8 is involved in ulnar deviation and thumb extension.
• Segment T1 is involved in splaying of fingers.
• Segment L1-L2 is involved in hip flexion.
• Segment L3 is involved in knee extension.
• Segment L4 is involved in ankle dorsiflexion.
• Segment L5 is involved in toe extension.
• Segment S1 is involved in ankle plantar flexion.
• Segment S2 is involved in knee flexion.
• The head and neck sensory neurons come from C1-C4.
• The lateral neck sensory neurons come from C3.
• The top of shoulder sensory neurons come from C4.
• The lateral arm and forearm sensory neurons come from C5.
• The thumb and index finger sensory neurons come from C6.
• The middle finger sensory neurons come from C7.
• The 4th and 5th finger sensory neurons come from C8.
• The medial forearm sensory neurons come from T1.
• The front of thigh sensory neurons come from L1-L2.
• The front of knee sensory neurons come from L3.
• The medial leg sensory neurons come from L4.
• The lateral leg sensory neurons come from L5.
• The bottom of foot sensory neurons come from S1.
• The popliteal space sensory neurons come from S2.
• The biceps reflex comes from C5.
• The brachioradialis reflex comes from C6.
• The triceps reflex comes from C7.
• The patellar reflex comes from L2-4.
• The Achilles tendon reflex comes from S1-2.